Shuffle the cards and divide them into equal piles according to the number of players. Each player should pick up a random pile of cards but must not look at them. Cards must remain facedown at all times.
Beginning with the person who shuffled the cards, each player places his or her card on the floor or table. Make sure that an equal distance is maintained between each player and the mounting cards.
The moment a card placed by a player matches the card on top of the increasing pile, you must call out, "Snap!" and slam your hand on the pile. Those cards become yours. Shuffle them prior to continuing the game.
Keep up the same process until one player has all the cards. He or she is the winner. The first player to run out of cards is a complete loser - complete because you may still have some cards by the first time someone cries "Snap," and claims the pile. In that case, you lost a substantial amount of cards but such losses aren't complete until all your cards are gone.